78 BULLETIN 97, UNITED STATES NATIONAL MUSEUM. 



Long Island Sound. New York: 1874; U. S. Fish Comm.; 2 

 males (colorless), 5 females (1 ovig.) (36207). 1874; U. S. Fish 

 Comm. ; 3 males (colorless), 1 female ovig. (36268). 1874; U. S. Fish 

 Comm.; 6 females (41034). 



New York market ; from oysters ; E. G. Blackf ord ; 2 females ovig. 

 (40811). 



Potomac River, off Point Lookout, Virginia ; surface, above oyster 

 beds; November 16, 1880; station 916, steamer Fish Hawk; 1 y., 

 about .7 mm. long (34224). 



Chesapeake Bay; off New Point Comfort Light, Virginia; 5i 

 fathoms; hrd.; temp. 50.3 F.; Apr. 22, 1916; station 8506, Fish, 

 Hawk; 1 male, 1 female, both young (49644). 



Beaufort, North Carolina : In tube of Chaetopterus; May 9, 1905 ; 

 Bureau of Fisheries; 1 male (Beaufort Lab.). In shell of live 

 Pinna; zoeae hatched the night of August 9, 1908; R. Binford; 2 

 females and zoeae (42850). Exploration of the eastern coast of 

 United States; 1 female (2472). 



Off Cape Fear, North Carolina; from Modiola tulipa; 15 fathoms; 

 gy. S. brk. Co. ; October 20, 1885 ; steamer Albatross; 1 female ovig. 

 (13736). 



Atlantic Ocean, 16 miles off Sapelo Island Lighthouse, Georgia; 

 May 3, 1915; station 8259; Fish Hawk (Danglade) ; 3 males (49252). 



Marco, Florida ; from Pinna muricata; May, 1884 ; Henry Hemp- 

 hill; 1 female ovig. (6971). 



Chandeleur Islands, Louisiana; L. R. Gary; 2 females (33112). 



Matagorda Bay, Texas; J. D. Mitchell; 1 female (18415). 



Cuba, at Cabanas; 2-25 fathoms; taken by submarine light on 

 sand, shell, grass to mud bottom ; June 8-9, 1914 ; station 16, Hender- 

 son and Bartsch, Tomas Barrera Exped. ; 2 males (48717). 



Jamaica, West Indies; March 1-11, 1884; steamer Albatross; 3 

 males, 19 females (13 ovig.) (18015). 



Kingston, Jamaica; taken by electric light; 1884; W. Nye, jr., 

 steamer Albatross; 48 males and females y. (7737). 



St. Thomas, West Indies ; January 17-24, 1884 ; steamer Albatross; 

 2 females ovig. (7666). 



From Pecten irradians; 1 male (20858). 



PINNOTHERES BIPUNCTATUS Nicolet. 



Plate 159, figs. 10-12. 



Pinnotheres bipunctatum NICOLET, in Gay, Hist. Chile, Zool., vol. 3, 1849, 

 p. 155, pi. 1, figs. 2-2c (type-locality, San Carlos de Chiloe; type not 

 extant). 



Diagnosis. Front of male produced, truncate, with median sinus. 

 Legs stout, ciliate. Carapace suborbicular, flattened, bipunctate. 



